<template>
    <div class="login-wrap">
        <div class="login-box">
            <div class="ms-title">后台管理系统</div>
            <el-form :model="param" :rules="rules" ref="login" label-width="0px" class="ms-content">
                <el-form-item prop="username">
                    <el-input v-model="param.username" placeholder="username">
                        <!-- 在input前面设置图标 -->
                        <el-button slot="prepend" icon="el-icon-s-custom"></el-button>
                    </el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input type="password" placeholder="password" v-model="param.password" @keyup.enter.native="submitForm">
                        <el-button slot="prepend" icon="el-icon-lock"></el-button>
                    </el-input>
                </el-form-item>
                <div class="login-btn">
                    <el-button type="primary" @click="submitForm()">登录</el-button>
                </div>
                <p class="login-tips">Tips : 用户名和密码随便填</p>
            </el-form>
        </div>
    </div>
</template>

<script>
    export default {
        name: 'Login',
        data () {
            return {
                param: {
                    username: 'admin',
                    password: '123123',
                },
                rules: {
                    username: [{required: true, message: '请输入用户名', trigger: 'blur'}],
                    password: [{required: true, message: '请输入密码', trigger:'blur'}]
                },
            }
        },
        methods: {
            submitForm() {
                // 登录的时候应该发送请求，验证用户名和密码，返回token值
                this.$refs.login.validate(valid => {
                    // vaild是个bool值， 如果验证通过返回true
                    if (valid) {
                        // 发送请求，验证身份
                        this.$message.success('登录成功');
                        // 自定义的假数据
                        let obj = {
                            username: this.param.username,
                            password: this.param.password,
                            token: 'test'
                        }
                        this.$store.commit('setUserInfo', obj);
                        this.$router.push('/');
                    } else {
                        this.$message.error('请输入账号和密码');
                        return false;
                    }
                })
            }
        }
    }
</script>

<style scoped>
    .login-wrap {
        position: relative;
        width: 100%;
        height: 100%;
        background-image: url(~assets/img/login-bg.jpg);
        background-size: 100%;
    }

    .login-box {
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        width: 350px;
        border-radius: 5px;
        background: rgba(255, 255, 255, 0.3);
        overflow: hidden;     
    }

    .ms-title {
        width: 100%;
        line-height: 50px;
        text-align: center;
        font-size: 20px;
        color: #fff;
        border-bottom: 1px solid #ddd;
    }

    .ms-content {
        padding: 30px 30px;
    }

    .login-btn {
        text-align: center;
    }

    .login-btn > button {
        width: 100%;
        height: 36px;
        margin-bottom: 10px;
    }

    .login-tips {
        font-size: 12px;
        line-height: 30px;
        color: #fff;
    }
</style>